Caldwell is a city in and the county seat of Canyon County, Idaho, United States. The U.S. Census Bureau estimated the population to be 43,281, as of July 2009.
Caldwell is the home of the College of Idaho. It is considered part of the Boise metropolitan area.
As of the census of 2000, there were 25,967 people, 8,963 households, and 6,354 families residing in the city. The population density was 2,289.3/sq mi. There were 9,603 housing units at an average density of 846.6 per square mile. The racial makeup of the city was
28.14% Hispanic or Latino
0.47% African American
0.94% Native American
0.10% Pacific Islander
2.91% two or more races